Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           ?"viruses"
             ["RNA viruses"]
               ["positive-sense ssRNA viruses"] see [unranked] positive stranded ssRNA viruses
                 [[unranked] "Infectious flacherie-like viruses"] see Genus Iflavirus